00001 // Copyright (C) 2004 EPITA Research and Development Laboratory 00002 // 00003 // This file is part of the Olena Library. This library is free 00004 // software; you can redistribute it and/or modify it under the terms 00005 // of the GNU General Public License version 2 as published by the 00006 // Free Software Foundation. 00007 // 00008 // This library is distributed in the hope that it will be useful, 00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00011 // General Public License for more details. 00012 // 00013 // You should have received a copy of the GNU General Public License 00014 // along with this library; see the file COPYING. If not, write to 00015 // the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 00016 // Boston, MA 02110-1301, USA. 00017 // 00018 // As a special exception, you may use this file as part of a free 00019 // software library without restriction. Specifically, if other files 00020 // instantiate templates or use macros or inline functions from this 00021 // file, or you compile this file and link it with other files to 00022 // produce an executable, this file does not by itself cause the 00023 // resulting executable to be covered by the GNU General Public 00024 // License. This exception does not however invalidate any other 00025 // reasons why the executable file might be covered by the GNU General 00026 // Public License. 00027 00028 #ifndef OLN_MORPHO_ENVIRONMENTS_HH 00029 # define OLN_MORPHO_ENVIRONMENTS_HH 00030 # include <oln/basics.hh> 00031 # include <mlc/type.hh> 00032 00033 namespace oln 00034 { 00035 namespace morpho 00036 { 00039 namespace env 00040 { 00043 namespace abstract 00044 { 00048 template <class Exact> 00049 struct env: public mlc_hierarchy::any<Exact> 00050 { 00051 }; 00052 } // !abstract 00053 00059 struct NullEnv: public abstract::env<NullEnv> 00060 { 00061 }; 00062 00068 template <class I> 00069 struct OtherImageEnv: public abstract::env<OtherImageEnv<I> > 00070 { 00071 typedef oln::abstract::image<I> im_type; 00072 00073 OtherImageEnv(const oln::abstract::image<I> &im): im_(im) 00074 {}; 00075 00076 const im_type &getImage() const 00077 { 00078 return im_; 00079 } 00080 00081 protected: 00082 const im_type &im_; 00083 }; 00084 00090 template <class I> 00091 struct ParentEnv: public abstract::env<ParentEnv<I> > 00092 { 00093 typedef oln::abstract::image<I> im_type; 00094 00095 ParentEnv(const oln::abstract::image<I> &im): im_(im) 00096 {}; 00097 00098 const im_type &getParent() const 00099 { 00100 return im_; 00101 } 00102 00103 protected: 00104 const im_type &im_; 00105 }; 00106 00107 } 00108 } 00109 } 00110 #endif // !OLN_MORPHO_ENVIRONMENTS_HH